In which one of the following,gametogenesis t | vedclass

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(D) In honeybees,the sex-determination system is haplodiploid. $1.$ The queen $(2n)$ produces eggs by meiosis. $2.$ The drone $(n)$ is produced from u

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Drone bee

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(D) In honeybees,the sex-determination system is haplodiploid. $1.$ The queen $(2n)$ produces eggs by meiosis. $2.$ The drone $(n)$ is produced from unfertilized eggs via parthenogenesis. $3.$ Since the drone is already haploid $(n)$,it produces sperms by mitosis,not meiosis,because it cannot undergo further reduction division. $4.$ Therefore,in the drone bee,gametogenesis occurs only by mitosis.

Column-$I$ (Mechanism of Sex Determination)	Column-$II$ (Example)
$P$. $XO$ type	$I$. Grasshopper
$Q$. Haplo-diploid mechanism	$II$. Drosophila
$R$. $XY$ type	$III$. Honey bee

In which one of the following,gametogenesis takes place only by mitosis?

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$P$. $XO$ type $I$. Grasshopper

$Q$. Haplo-diploid mechanism $II$. Drosophila

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